Collatz in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 641st Shanethegamer 🇺🇸 875 51 511ms 15 May 2023 642nd rucin93 🇵🇱 874 57 144ms 4 Aug 2024 642nd dokutan 874 57 135ms 9 Aug 2024 644th c0d3-4-F00d 🇩🇪 874 61 11ms 6 May 2022 644th jackkav 874 61 11ms 26 Jun 2022 644th TechNolaByte 874 61 10ms 6 Jul 2022 644th Heathcorp 🇦🇺 874 61 11ms 17 Jul 2022 644th C0de5mith 🇺🇸 874 61 12ms 3 Aug 2022 644th sebipopa 🇷🇴 874 61 10ms 18 Aug 2022 644th moikaturns 🇬🇧 874 61 11ms 25 Sep 2022 644th FlorianCassayre 🇫🇷 874 61 11ms 27 Sep 2022 644th Mazn3k 874 61 10ms 1 Feb 2023 644th tvcv901 874 61 10ms 22 Mar 2023 644th unfinishedprogram 874 61 10ms 19 Jul 2023 644th snoozingnewt 🇨🇦 874 61 11ms 23 Sep 2023 644th funnyboy-roks 874 61 10ms 9 May 2024 644th bac0id 874 61 11ms 29 Jun 2024 644th madex 🇩🇪 874 61 11ms 9 Jul 2024 644th FortuiteMan 🇫🇷 874 61 10ms 10 Oct 2024 644th RobertHoeh 874 61 10ms 5 Apr 2025 644th LvLError 874 61 10ms 29 May 2025 644th miles-evan 874 61 11ms 5 Aug 2025 644th alexsave 874 61 11ms 13 Oct 2025 664th dokutan 873 62 5ms 28 Apr 2025 665th NerdyMcNerd42 873 64 20ms 26 Oct 2022 665th tpasfieldERAU 873 64 23ms 14 Nov 2022 665th CheeseCake628 🇳🇴 873 64 23ms 6 Jan 2023 665th adamnielson42 🇺🇸 873 64 19ms 25 Apr 2023 665th nathsou 🇫🇷 873 64 22ms 2 Sep 2023 665th zwxzwxzwx21 873 64 24ms 30 Jan 2024 665th steffan-polygolf 873 64 21ms 8 Mar 2024 665th Jacob385 873 64 61ms 4 Apr 2024 665th gallium-gonzollium 873 64 28ms 26 Aug 2024 674th Shanethegamer 🇺🇸 873 66 172ms 4 May 2022 674th scpchicken 🇵🇼 873 66 254ms 5 May 2022 674th sisyphus-ppcg 🇦🇺 873 66 174ms 6 May 2022 674th Natanaelel 🇸🇪 873 66 144ms 15 Jun 2022 674th Z-snails 873 66 254ms 27 Feb 2023 674th Jeremy-Stafford 873 66 258ms 27 Feb 2023 674th alomiF 873 66 293ms 1 Sep 2023 674th btnlq 873 66 145ms 17 Oct 2023 682nd johnnythedoggie 873 72 87ms 13 May 2022 682nd kaascevich 873 72 90ms 8 Jul 2025 684th DialFrost 🇸🇬 873 73 90ms 3 Jun 2025 685th inventshah 873 97 57ms 6 May 2022 685th roupiq 🇵🇱 873 97 55ms 22 Nov 2023 685th emgordon154 873 97 54ms 2 days ago 688th HPWiz 🇳🇿 872 49 247ms 4 May 2022 688th JayXon 🇺🇸 872 49 237ms 5 May 2022 688th Steffan153 🇫🇮 872 49 247ms 10 Dec 2022 688th ovs-code 🇩🇪 872 49 425ms 24 Oct 2023 688th sean-niemann 🇺🇸 872 49 271ms 12 Jul 2024 693rd DialFrost 🇸🇬 872 86 40ms 24 Oct 2024 693rd stefangimmillaro 872 86 39ms 14 Jan 2025 695th c0d3-4-F00d 🇩🇪 872 89 368ms 5 May 2022 695th fkantelberg 872 89 407ms 15 Jul 2023 695th bac0id 872 89 374ms 26 Sep 2023 695th TRexOnGit 872 89 432ms 16 Feb 2024 699th janbehrens 🇩🇪 872 90 442ms 21 Apr 2023 699th Yewzir 🇧🇪 872 90 426ms 22 Apr 2023 699th Ripick 872 90 439ms 27 Nov 2024 699th emgordon154 872 90 368ms 10 Dec 2025 703rd emgordon154 872 96 104ms 3 Dec 2025 704th MeWhenI 🇻🇦 872 109 270ms 9 Feb 2023 705th GolfingSuccess 🇬🇷 870 71 2ms 5 May 2022 705th emplv 🇱🇻 870 71 2ms 5 May 2022 705th JayXon 🇺🇸 870 71 2ms 7 May 2022 705th m-tkach 🇺🇦 870 71 2ms 15 May 2022 705th nwellnhof 🇩🇪 870 71 2ms 5 Jun 2022 705th Irratix 🇳🇱 870 71 2ms 13 Jun 2022 705th michael-pruglo 🇺🇦 870 71 2ms 13 Jul 2022 705th stefangimmillaro 870 71 2ms 2 Jun 2023 705th kkoenig 870 71 2ms 21 Dec 2023 705th JohandeRuiter 🇳🇱 870 71 2ms 14 Sep 2024 705th masinag 🇮🇹 870 71 2ms 6 Oct 2024 716th AlephSquirrel 870 80 12ms 20 Apr 2023 716th ashtraypettingzoo 🇺🇸 870 80 15ms 1 Apr 2024 718th dokutan 868 82 21ms 1 Jul 2024 719th nwellnhof 🇩🇪 867 53 6ms 4 May 2022 719th GrayJoKing 🇦🇺 867 53 7ms 6 May 2022 First Prev 641–720 of 3,548 Next Last